I've completed drafting the first mainland system for the metropolitan region Île-de-France around Paris. It is the smallest but most populated mainland region with 8 departements. fraidfd system has more than 5,500mi with more than 1,200 routes. Paris departement (75) does not have D routes.
wikisara is a good source but there's a lack of overview articles for many departements. I've edited the url manually and found a lot of articles. However, there is usually no full list of routes. I've included everything confirmed by wikisara and OSM/GM. If OSM/GM were incomplete, I've checked GSV.
There's also a map (
geoportal for Seine-Saint-Denis which is also fine but sometimes different to OSM/GM. I've only drafted routes according to the map and have ignored what OSM, GM or wikisara indicate.
Main issues are outdated old signs, especially for old N routes, and inaccurate GM and OSM data. GM often indicates the old N route old, OSM and GM often extend D route numbers from a departement into the next departement. That means, the number doesn't change on OSM but there is often no evidence that the route is a D route in the second departement. Or there is a different number but OSM and GM indicate the wrong one.
Routes are often downgraded to "communal" roads. I've usually ignored the fact if the route through the town is clear (confirmed by OSM and GM). I haven't drafted routes which are indicated on wikisara being
completely downgraded but indicated on OSM and GM. I have included similar routes if there is no wikisara article for the route though.
In general, I would not rely on OSM in France! We should minimum find another source, e.g. GM. If both are identical, it usually seems to be correct. I press the "OSM" button in wpt editor and report the issue to OSM maintainers when I find incorrect data. I hope it will be fixed one day to avoid having to check routing again and again in the future.
Some notes to routes of "active" systems:
Shouldn't
N415 wp "N1" be renamed since there is no N1 route (in HB)?
N441 should be truncated at north end according to
wikisara (confirmed by OSM)
